1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Valentin [98]
3 years ago
9

In the paired chromosomes, which pair might have two different chromosomes with very different genetic coding?

Biology
1 answer:
Black_prince [1.1K]3 years ago
3 0

Answer: X and Y chromosomes.

Explanation:

<u>Chromosome that differs from other chromosomes (autosomes) in shape, size and behavior are called sex chromosome, allosome, heterochromosome or idiochromosome.</u> These sex chromosomes are typical mammalian allosomes and are sex-determining in species in which sex is determined by the XX-XY system. The presence of the XX allosomes determines female sex, while the XY allosomes are for male sex. These chromosomes contain different genes, where some are only on the X chromosome and others only on the Y chromosome, and a few are on both.

The size of the human X chromosome is 164 million bases and currently has 1,170 genes. It is composed of many repetitive DNA segments that do not code for any protein or their function is not known. Only 1.7% of the chromosome codes for functional proteins that are low in length compared to the average length of a human gene. It has a small number of genes known as housekeeping or constitutive -(responsible for the basic maintenance of the cell) and <u>most of the genes it contains are expressed in few tissues or are tissue-specific, which is especially true for those expressed in brain regions.</u> So, the X chromosome is larger and has more euchromatin regions than the <u>Y chromosome which only has genes that code for male sexual development</u>. Since females have two X chromosomes and males have only one, during development in females one of the X chromosomes is inactivated at random in each tissue to make a dosage compensation. Otherwise, females would be expressing twice as many genes as a male. And through inactivation and dosage compensation, both males and females will express the same number of genes.

You might be interested in
Which of the following actions would you take to remain safe in the lab?
LekaFEV [45]

Answer: While cutting a screen for an aquarium top, you point the scissors away from your body.

You pipette a liquid using a bulb pipette.

You heat a liquid by placing it in a plastic beaker on a hot plate.

Explanation:

5 0
3 years ago
I need help what’s this. it’s about heart rate
spin [16.1K]

Answer:

During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.

5 0
3 years ago
A scientist is examining a pedigree that includes several generations of an organism with XX/XY chromosome sex determination. Wh
REY [17]

The patter of inheritance would support the hypothesis that the trait being studied is a recessive sex- linked trait found on the X chromosome "The trait is mostly expressed in males who have a maternal grandfather with the trait."

Explanation:

A pedigree chart is a illustration that displays the existence and arrival of phenotypes of a specific genetic factor or organism and its families from one group to the next, most usually individuals, show dogs, and race horses. A pedigree chart displays a family tree, and shows the members of the family who are affected by a genetic trait. This chart shows four generations of a family with four individuals who are affected by a form of colorblindness. Circles represent females and squares represent males.

7 0
3 years ago
In tomatoes, fuzzy skin (F) is dominant over smooth skin (f). A cross between a fuzzy skinned tomato and a smooth skinned tomato
Gala2k [10]

Answer:

50 /50

Explanation:

7 0
2 years ago
All cells have a nucleus that acts as a command center for the cell.
Pavlova-9 [17]
Is this supposed to be a true false question?
5 0
3 years ago
Read 2 more answers
Other questions:
  • What are the gases found in the atmosphere?
    5·1 answer
  • PLEASE HELP I WILL REWARD BRAINLIEST !!! Need help asap
    11·1 answer
  • Ignore this thx sjshgfkskwka
    10·1 answer
  • Which of the following activities is an environmentally responsible use of power?
    9·2 answers
  • Michele believes she cannot lose weight because she has a slow metabolism. Of the research she has done on the subject, which wo
    15·2 answers
  • What Family is Organism #2 a part of? Type out the whole name.*
    13·1 answer
  • ¿Se pueden transferir mutaciones en todo tipo de células a la generación futura?
    11·2 answers
  • BRAINLIEST!!! pls help :/
    9·1 answer
  • What is embryogenesis???​
    12·2 answers
  • What has no effect on photosynthesis? 1. Light intensity 2. Temperature 3. Carbon dioxide concentration 4. Oxygen concentration
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!